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iogann1982 [59]
3 years ago
7

If a ball is thrown from a tall building, how tall is the building if it takes 6s for the ball to land?

Physics
1 answer:
daser333 [38]3 years ago
4 0

Answer:

the answer is 352.8m

Explanation:

Since the gravitational constant is denoted as g

g = 9.8  \:  \frac{m}{ {s}^{2} }

and the ball needed 6 seconds to land, so we can calculate the height of the building as:

h = 9.8  \:  \frac{m}{ {s}^{2} } \times {(6s)}^{2}  = 9.8  \:  \frac{m}{ {s}^{2} }  \times 36 {s}^{2}  = 352.8m

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Explanation:

spectral lines or signatures of elements depend on temperature, the temperature of the sun is about 5800 K.

at this temperature most calcium atoms are excited to higher energy states than hydrogen atoms and this means that calcium atoms are gonna have more signatures than the atoms of hydrogen.

the statement that the sun shows weak hyrogen lines and strong calcium line is wrong because at the sun's temperature most of the hydrogen atoms are in lower energy states while calcium atoms are in higher energy states hence calcium has more or ''strong'' lines than hydrogen.

8 0
3 years ago
Identrying the speed of the Cart
aleksklad [387]

The speed of the cart after 3 seconds of Low fan speed is equal to 54 cm/s.

<h3>How to calculate the speed?</h3>

Mathematically, speed can be calculated by using this formula;

Speed = distance/time

At Low fan speed after 3 seconds, the distance covered is 162 cm:

Speed = 162/3

Speed = 54 cm/s.

At Medium fan speed after 5 seconds, the distance covered is 600 cm:

Speed = 600/5

Speed = 120 cm/s.

At High fan speed after 2 seconds, the distance covered is 128 cm:

Speed = 128/2

Speed = 64 cm/s.

Read more on speed here: brainly.com/question/17350470

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6 0
2 years ago
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Which of the following is most likely to happen when energy is transferred to
ankoles [38]

Explanation:

the object will begin to move

4 0
3 years ago
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tickets at a museum cost 17 dollars each for a field trip, the museum offers a 4 doller discount on each ticket. How much will t
Marizza181 [45]

Answer:

$416 sounds like the best answer.

Explanation:

The tickets started off at $17, but a $4 discount for EACH ticket bought.

so 17-4 is 13

now tickets cost $13 each.

Multiply it by 32.

13x32=416

5 0
3 years ago
What is the current in a 160V circuit if the resistance is 2Ω? V= I= R =
sveta [45]

Answer:

80 amperes

Explanation:

Current in the circuit = ?

Voltage in the circuit = 160 Volts

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Voltage = Current x Resistance

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160V = I x 2 Ω

I = 160V / 2 Ω

I = 80 Amperes

Therefore the current in the circuit is 80 amperes :)

8 0
3 years ago
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